Drilling apparatus.



F. E. PLACE L M. L. JENKINS.

DRILLING APPARATUS.

APPLICATION FILED OCT. 24, 19H.

Patented Mar. 14, 1916.

Patented Mar. 14, 1916. 3 SHEETS-SHEET 2.

omLLlNG APPARATUS.

APPLICATION FILED OCT. 24, 1911.

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F. E. PLACE & II/I. L. JENKINS.

DRILLING APPARATUS.

APPLICATION-FILED ocT. 24, |911.

Patented Mar. 14, 1916.

3 SHEETS-SHEET 3.

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FREDERICK E. PLACE, OF CHICAGO, ANI) MEF-BILL L. JENKINS, 0F HARVEY, ILLINOIS, ASSIGNORS TO THE BUDA COMPANY, OF CHICAGO, ILLINOIS, .A CORPORATION OF' ILLINOIS.

DRILIING APPARATUS.

Specification of Letters Patent.

Patented Mar. iet, 1916.

Application filed October 24, 1911. `Serial No. 656,426.

To all 'Z0/wm t may concern: A

Be it known that we, FREDERICK E. PLAGE and MERRILL L. JnNKINs, citizens of the United States, and resident-s, respectively, oi Chicago and oi Harvey, both in the county oi' Cook and State of Illinois, have invented certain new and useful Improvements in Drilling Apparatus, of which the following is a speciiication.

Our present invention relates to drilling apparatus in general, and more particularly to portable apparatus of this character and has special reference to the provision offan improved form oi drilling apparatus peculiarly available rfor operations upon unwieldy objects such as railroad rails which are not conveniently movable.

rThe principal objects of our present inl vention are the provision of improved means i'or engaging the apparatus with the rail or other work to be operated upon whereby it is iirmly held against movement relatively thereto and may be adapted to accommodate work of different sizes; theiprovision of improved clamping means for maintaining such engagen'ient;y the provision lof improved means for facilitating the ready disengagement of the apparatus from the work; the provision of an improved construction whereby the drilling machine proper may be demountedi'rom the frame or carriage by means of which it is supported in operative relation to its work; the provision of improved construction and arrangement of the frame drill for supportmg them close to the work in operative relation thereto, whereby a most rigid structure is attained; the provision of an improved unitary orm of frame construction whereby disadvantages ensuant upon parts working loose or the structure becoming racked out of shape are avoided; the provision of an improved construction whereby the thrust of the drill is received yby the frame directly instead of through connections, thereby avoiding all resiliency tending to break the drill 'as .it springs through the material upon which it is operating; the provision of an improved ormof driving .mechanism for the drill, whereby the .driving and feeding elements are at all times held in alinement, wherein the driving and feeding elements may be simultaneously adjusted in an extremely simple manner, and wherein the adjustment oi." one oiE the members relative to the other may likewise be accomplished in an extremely simple manner; and generally to provide an apparatus of the character described of great efficiency, strength and simplicity and of low cost of manufacture Vand maintenance, together with such further and additional objects as may hereinafter appear.

In the attainment of the foregoing objects, as well as certain advantages to be below more fully disclosed, we have provided a construction one embodiment of which is illustrated `in, the accompanying drawings, wherein-- i Figure l is a side elevational view, partly in section, showing our improved apparatus, for purposes of illustration, in engagement with a railway rail; Fig. 2 is a rear elevational view and Fig. 3 is a plan view of the apparatus of Fig. l; Fig. 8a is a fragmentary side elevation of the rear portion of the drilling machine adjacent the ground;

Fig. 3b is a fragmentary vertical section on the line 3b3b of Fig. 3a. Fig. 4i is an elevational view of a part of the apparatus viewed from a position opposite to that shown in Fig. l; Fig. 5 is an enlarged view of a detail 'of construction shown in Fig. 2; Fig. 6 is a sectional view taken on the line VI-VI of Fig. l; and Fig. 7 is a sectional view of a detail of construction taken on the line VII-VII of Fig. 3. Fig. 7'CL is a perspective view of a detail of construction.

Referring first more particularly to Figs. l and 3 of the drawings, it will be observed that in embodying our invention in a machine specially adapted for the drilling of railwayrails, in which field it is of great utility, tho-ugh nevertheless available for many other applications, we provide a construction wherein we utilize two relatively movable frames.

`10-'l0, being maintained in spaced relationby a distance rod 13 and turned downwardly in order to provide tension hooks l-lll to engage one side of the head l5 of' a raii 16, in order that the drill maybe in frame members 10-10 (see Figs. 2'and 3).y

position to operate upon the web 17 of the rail.- To the end that the device just described, in combination with the thrust member to be described below, may most `effectively engage rail heads of. different sizes, cach of the hooks 14 is provided with a take up screw 18 having a, lock nut 19.

For supporting the ydrill stock and the driving and feeding mechanism therefor, rand the thrust and. clamping member cof operating1 with the hooks 14, we employ a vertical frame comprising the members 2.0 and 21-21 (see Fig. 2) connected longitudinally adjacent the'top as indicated at ture in order to secure the greatest possible degree of rigidity.

For slidably supporting the rear end of the vertical frame, the members 21-21 are provided adjacent their lower edges with shoes 25,726 riding upon the upper surface of extensions 27-281of the frame members 23 23', the said members 21-21 also being provided with shoes 29-30 adapted to i ride on the under surfaces of such extensions to prevent the frame from tiltingV for-v wardly, and for slidably supporting the oppositeend of the frame and as *engagingy means .coperating with the hooks 14, we provide on the member 2O a forwardly extending thrust member, 31, here shown as of a skeleton construction including the legs 32,-33 and 34 suitably fastened to the said member 20 as by bolts 35-35, and provided with a cross'head 36 having shoes 37-37 riding upon lateral extensions 38-38 of the Vmembers 10-10 and coperating shoes 39 engaging the lower surface of such projection. For contacting with the rail and holding it firmlyag'ainst the hooks 14, thethrust ,member is Vprovided with an eni larged abutment Vsurface 40 preferably centralized on the cross-head` 36 so as to be sustained against bending, by means fof the radially disposed members 32, 33, 34 and V36. 'A For movingthe vertical frame forwardly andy thereby causing the abutment' surface 40 of the thrust-member tok approachthe plane of the hooks 14a'nd engage the rail head, we employ a bifurcated koperating lever 41, whose ends, by extensions 42, and 43, are mounted upon pivot pins 44, 45 between ears'46-46 and 47-47 Yformed onthe Such lever 41 is Apivotally engaged at 48 to a `toggle link 49 which is in turn pivoted at 50 to an extension 51 ofthe frame member 21', as willbe seen, onnviewingfzFigs. v3 and 4. The positionassumed by thelever 41 and link49 when,thevrailisfengaged is shown in Afull lines inA Fig. 4, while the posired, however, to separate the frames, for

purposes of repair or otherwise, the nuts 48, 50, etc., may be removed so that the links they hold in place can be readily separated to allow the frame which carries the drill to be moved rearwardly as a whole away from its supporting side frame 10.

To prevent any accidental rearward movement of the vertical frame, the lever41 is provided with wedge blocks 52 and 54, which, when such lever is moved into the position shown in Fig. 1, engage between 4the shoes 25 and 26 and the abutments 53 and 55 and coperate with the toggle link. The wedge blocks 52 and 54 are conveir iently similitudes and preferably inclined to coperate with the inclined surfaces of the abutments 53 and 55 as indicated in Figs.3a and 4. y

Referring now more particularly to Figs. 1, 2 and 4, it will be apparent that to the endV that the drillV stock 56 may be rotated it is splined in a bushing 57 rotatably carried in an enlargement 58 of the transverse frame members 24. In order that it may be susceptible of longitudinal movement as well as rotation, the drill stock 56 is provided with a longitudinal slot 59 which forms a key way for a spline 60 engaging said slot and likewise said bushing 57. For moving the stock 56 and feeding the bit 61 carried. thereby into the work, the stock isV screwthreaded, as indicated at 62, and mounted in a nut 63 carried in an enlarged portion 64 of the transverse frame member '21. This enlarged portion 64, together with the washer 65. and the collar 66and lock nut 67 comprise a housing for a ball 'race 68, thus constitutingy an anti-friction bearing for saidnut. For protecting the thread 62 a sleeve 69, loosely carried on the Ydrill stock 56, is employed intermediate the parallel frame members 2O and 21, and the Aportion of the threadV on the rearwardly projecting end of the stock is covered by a sleeve 69', having threaded engagement jwith the nut 63 as shown in Fig. 1.

For driving the vdrill stock 56 we employ ,a'sprocket 70 fixed on the bushing 57 and connected by a chain 71 to a sprocket wheel 72 .rotatably mounted on a crank shaft 73, and for feeding the drill stock 56 we employ a pinionl 74 fixed on the nut 63 and connected bya chain 75to a sprocket 7 6 mounted on said shaft 7 3 and fixed against rotation thereon. For protecting the pinion 70 we form on the transverse member 24 a shield 7 0 which isV sufficiently extended to' form a legfor they support of the machine.

Oninspection ofV Fig. 5 it will be apparent thati for ymovingfthe idlerv roller 77 and 75, we provide intermediate the yvertical frame members 21-21 a transverse member 7S slotted as indicated at 79 to receive the pintle 8O carrying a bushing 80 upon which said idler 77' rotates, said bushing having a collar bearing against the frame and said pintle being partially screw threaded and provided with a nut 81 bearing on said bushing, whereby the pintle may be held iixedly in predetermined position.

As will be clearly manifest on viewing Fig. G, for moving both of the sprockets 72 and 7G simultaneously relative to the drill stock 56, in a plane parallel thereto and at all times maintaining their' alinement, the shaft 73 is revolubly mounted in an eccentric bearing 82 which in turn is rotatably mounted in split extensions B--SlA of the frame members 2O and 21, which form journals for said eccentric bearing, each of said members 83, Si being provided with extended ears 85-86, 85-86, the eccentric being held in predetermined position by means of the cap screws 88 and S9.

For driving the crank shaft 73 and operating the drill, a crank or handle 90 is provided, at the rear of the machine, and, as means for inducing simultaneous rotation and feed of the drill stock, we mount at the front of the machine, on the shaft 73, a hollow arm 91 having pivoted thereto a bifurcated dog 92 (see TEig. 7a) adapted to engage one of the spider legs 93 of the sprocket 72, such dog being provided with an operatino` linger 9a whereby it may be readily moved into or out of position. For normally holding said dog in adjusted position, we employ a plunger, 95, carrying a collar 96, said plunger having one of its ends 9T passing through an extension 98 arranged within said arm 91 and the other of its ends 99 reciprocally mounted in a guide 100, a spring 101 encircling said plunger and sustaining it in contact with the dog 92.

From the foregoing description it will be seen that in the operation of drilling apparatus embodying our invention, when the drill stock 56 is moved tothe extreme right` opposite to its position shown in Fig. 1and the operating lever i1 likewise thrown to the extreme right, the machine may be placed in position with the frame members 1() resting upon the rail head, so that the hooks 11iwill bear against one side of such head. The lever l1 being then moved to the left so that it will occupy substantially the position shown in Fig. 1,the entire vertical frame will lil be moved to the left forcing the abutting surface '-1.0 of the thrust member inst the le of the rail-head opposite the hooks and the take up screws 18 being .properlyL placed to acconinnodatethe rail, the

rail is firmly clamped in position between the fixed al itments formed by the hooks la and the movable abutment formed by the i thrust member 31. The linger 94 being depressed from the position shown in Fig. 1, the operating handle 90 being revolved clockwise (viewed from the rear) the drill stock is rapidly fed forward without rotation until the bit 61 strikes the web 17. The linger 9st being then moved to the position shown inFig. 1, the sprocket 7 2 being thereby held against rotation on the shaft 73, the drill stock 5G will then be rapidly rotated through the rotation of the sprocket 70, as well as fed forwardly by the rotation of the nut G3 through the pinion 74. lnasmuch as bo-th the horizontal frame members and vertical fra-me members are in rigid engagement with the rail head 15, transmitting the thrust of the drill directly to the frame, there will be no spring tending to fracture the drill bit as it breaks through the rail web 17. It will be further observed that inasmuch as the vertical frame is conveniently made in one piece, properly trussed and braced, there are no relatively movable parts which can work loose or become racked out of position; that since the movement of the lever into position shown in Fig; 1 clamps the rail firmly into the machine before the drilling operation is started, the rail is held in such clamped position by virtue of the Varrangement of the wedge blocks heretofore described,l the rail will. be held in such clamped position until the lever is moved out of position shown in Fig. 1; that by reason of their long angle of bend and their support upon and close up to the rail, by means of the cross head 36, the rail hooks are most rigid and avoid the tendency to bend present in the common construction of curved hooks. It will further be noted that by virtue of the employment of the sleeves 69 and 69', and the shield 70 the threaded portion of the drill stock, and the sprocket 70, are well protected from the entrance of foreign matter: that by reason of the simple construction of idler roller support, any slack in the feed chain lo may be taken up by movement of a single screw; and that by means of the mounting of the sprocket 72 and 76 on the shaft 73 carried in the eccentric S2, not only are the sprockets always held inalinem'ent, but by simply loosening the two cap screws 88 and 89. then turning the eccentrics, and finally tightening the two screws, both chains may be simultaneously tightened or loosened without disturbing their alinement.

Other advantages of machines embodying our invention will be apparent to those who are skilled in the art to which it pertains.

Having thus described our invention and illustrated its use, what we claim as new and desire to secure by Letters Patent is the following l. In a rail drilling apparatus, in combiioc nation, a pair oit' `frames slidable on and relatively vto each other, toggle means for looking said frames against-relative movement, rail holding abutments on each trame, and means for varying the distance one set of abutments projects from the frame Which supports them, whereby the distance between opposingabutments When the frames are in locked position may be adjusted.

2. In a rail drilling apparatus, in combination, a stationary trame having a tension member, a second frame slidable on and relatively thereto and having a thrust member, toggle means for locking said frames against relative movement, rail holding abutinents on each frame, means for varying the distanceone set of abutments project from the frame Which supports them, whereby the distance between opposing a'butments When the frames are in locked position may be adjusted.

3. ln a rail drilling apparatus, in combination, a frame provided with a pair of tension hooks, a second frame slidable on and relatively thereto and having a ixed thrust `member, toggle means for locking said frames against relative movement, rail holding abutments on each frame, and means for varying the distance one set of abutments projects from the frame which supports them, whereby the distance betvv'een opposing abutments When the frames are in locked position may be adjusted.

il. In a rail drilling apparatus, in combination, a pair of trames slidable on and relatively to each other, toggle means for looking said frames against relative movement, rail holding abutments on each frame, the abutments on one frame being provided with take-up means, whereby the distance between opposing abutinents When the trames are in looked position may be adjusted.

5. In a rail drilling apparatus, in combination, a. pair of frames slidable on and relatively to each other, each provided With rail holding abutments, means for varying the distance one set of abutments projects from the frame Which supports them, and toggle means for sliding said frames relatively to each other.

G. En a. rail drilling apparatus, in combination, a pair of relatively movable frames provided with oo-acting pairs of abutments,

j and means for moving one of said frames irovidedk v-with means adapted to be interposedvbetiveen the members of one pair of said abutments upon movement thereof, whereby the frame is ield in moved position, the opposite pair of said abutments being adapted to coact with the other pair of said abutments for simultaneously gripping nation,a pair of relatively movablel ,frame abutments are mutually supported and means for holding the abutments in adjusted position.

8. In a rail drilling apparatus, incombination, a pair of relatively movable frame members provided with rail holding abutinents, a drill carried by one ot said frame members, driving mechanism for said drill carried by said last-mentioned trame member, said drill being movable axially relatively to said frame and said driving mechanism, and means for moving said last-mentioned frame member relatively to the other frame member, whereby the abutment carried by the first-mentioned frame member and the drill is caused to approach the other of said abutments.

9. In a rail drilling apparatus, in combination, a frame member provided with a pair of tension hooks, a frame member provided With a thrust bar and a cross head, and means whereby said trame members may be moved relatively to each other, said cross head being constructed to engage with said tension hooks adjacent the end of the thrust bar, whereby both are supported close to the rail upon actuation of said moving means.

lO. In a rail drilling apparatus, in combination, a pair of relatively movable frame members provided with rail holding abut- Vments, moving means carried by one of said' frame members for moving it relatively to the other thereof, operating means connecting said moving means With the other of said ramemeinbers, and means for connecting said operating and moving means, said trames being constructed to permit disconnection and drawing apart thereof upon removal of said connecting means. i ll. In a rail drilling apparatus, in combination, a pair of frame members provided adjacent one endl With rail holding abut- Yments and slidable supporting means Whereby the iframe members are relatively movable and at the other end with slidable supporting means, an operating lever pivoted to one of said trame members, and a toggle link pivoted tothe other of said trame members and to said lever.

12.1n a rail drilling apparatus,'in oombination, a pair of relatively movable frame members provided adjacent one end With rail holding abutments and slidable supporting' means whereby the frame members are relatively movable, one of said. members being provided at the oppositeend'with a fixed abutment, an operating lever pivoted to one ofsaid trame members andV a toggle link pivoted to the' other of said trame membersyand'tbe said lever, said lever being pro- IN) i vided with an abutment cooperating with said last mentioned abutment and said toggle link, whereby said first mentioned abutments are restrained from separation.

13. An apparatus of the character described comprising, in combination, a unitary cast supporting frame, a tool carried by the frame, a plurality of driving members supported by the frame for imparting motion to said tool, a shaft carrying a plurality of driving members having operative connection to said first mentioned driving members supported by said frame, a thrust member on said frame adapted to engage the rail, a second frame provided with a tension member cooperating therewith and slidably supporting the first mentioned frame, and means for moving Athe first mentioned frame relatively to the other whereby a rail may be gripped between the tension and thrust members.

14. An apparatus of the character described comprising, in combination, a supporting frame, a tool carried by the frame, a plurality of driving members supported by the frame, for imparting motion to said tool, a shaft carrying a plurality of driving members having operative connection to said first mentioned driving members supported by said frame, a thrust member carried by the frame adapted to engage the rail, a second frame provided with a tension member cooperating therewith, and means for moving the first mentioned frame relatively to the other whereby a rail may be gripped between the tension and thrust members.

15. In a device of the character described, in combination, a drill stock provided with a thread a nut having threaded connection with said stock, a bushing having slidable and non-rotatable engagement with said stock, a frame for supporting said nut and bushing, means for rotating said nut and bushing, and a sleeve to protect the thread of the drill stock etween said nut and bushing.

16. In a device of the character described, in combination, a drill stock provided with a thread a nut having threaded connection Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents..

with said stock, a bushing having slidable and non-rotatable engagement with said stock, a frame for supporting said nut and bushing, means for rotating said nut and bushing and a sleeve G9 protecting the eX- tended portion of said stock.

17.- In a device of the character described, in combination, a drill stock, means for revolving the stock, means for feeding the stock, driving means for said feeding and revolving means, and spring held means thereon whereby the driving means may be connected with or disconnected from said revolving means, so that the revolving means and the feeding means may be operated simultaneously or the feeding means actuated alone.

18. In a device of the character described, incombination, a drill stock provided with a thread, a nut having threaded connection with said stock, a bushing having slidable and non-rotatable engagement with said stock, a frame for supporting said nut and bushing, gearing members for rotating said nut and bushing, a driving shaft, gearing members onsaid shaft for driving said first mentioned gearing members, one of said last mentioned gearing members being loose on said shaft and spring held means acting on said loose gearing member for causing it to rotate with said shaft.

19. In a rail drilling apparatus, in com bination, a pair of rail holding abutments mounted for slidable movement relatively to each other, a take-up device for varying the distance between opposing abutments, toggle means for causing said abutments to approach to grip a rail therebetween, and means for locking said abutments against relative movement.

In testimony whereof we have hereunto signed our names in the presence of the two subscribed witnesses.

FREDERICK E. PLACE. MERRILL L. JENKINS.

IVitnesses PAUL CARPENTER, MARTHA WESTMAN.

i Washington, 1D. C. 

